Monthly Archives: September 2012

How to Copy an Array into Another Array in Java


The contents of one array can be copied into another array by using the arraycopy() method of the System class in Java. The arraycopy() method accepts source array, source length, destination array and destination length. The following program shows the

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Posted in JAVA, SCJP

How to check duplicated value in array


package com.test; import java.util.Set; import java.util.HashSet; public class CheckDuplicate { public static void main(String args[]) { String [] sValue = new String[]{“a”,”b”,”c”,”d”,””,””,”e”,”a”}; if(checkDuplicated_withNormal(sValue)) System.out.println(“Check Normal : Value duplicated! \n”); if(checkDuplicated_withSet(sValue)) System.out.println(“Check Set : Value duplicated! \n”); } //check duplicated value

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Posted in JAVA

How to create XML file in Java


package com.test; import java.io.File; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.w3c.dom.Attr; import org.w3c.dom.Document; import org.w3c.dom.Element; public class CreateXMLInJava { public static void main(String argv[]) { CreateXMLInJava createXml = new

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Posted in JAVA, XML

Read Excel file in Java using POI API


import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.util.Iterator; public class ReadExcelFileUsingPOI{     public static void main(String[] args) throws Exception {         String filename = “D:\\test.xls”;         FileInputStream fis = null;         try {             fis = new FileInputStream(filename);             HSSFWorkbook workbook = new HSSFWorkbook(fis);             HSSFSheet sheet = workbook.getSheetAt(0);             Iterator rows = sheet.rowIterator();             while (rows.hasNext()) {                 HSSFRow row = (HSSFRow) rows.next();                 Iterator cells

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Posted in JAVA, POI API

Percentage Calculation in Java


import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public final class Percent { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); System.out.println(“enter the total no.of sub”); int n = Integer.parseInt(br.readLine()); int marks[] = new int[n]; int

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Posted in JAVA

How to Create Excel file in Java using POI API


import java.io.FileOutputStream; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; public class CreateExcelFile { public static final String FILE_NAME = “D:\\test.xls”; public void createExcelFile(String filename) { try { HSSFWorkbook hwb = new HSSFWorkbook(); HSSFSheet sheet = hwb.createSheet(“Sheet1”);   HSSFRow rowhead = sheet.createRow((short)

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Posted in POI API

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Mallikarjun Gunda

This is Mallikarjun Gunda, I am working as a software professional. Blogging is my Passion. This blog contains the posts on Java related technologies and programming languages. I am happy to share my knowledge through the blogs.

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